Mode of and apparatus for molding gutters and curbings



8 WILSON. Mom; 01- AND APPARATUS FOR MOLDING GUTTERS ANDCURBINGSJ APPLICATION FILED JUNE 9, I920- Patented Mar. 21, 1922.

UNITED STATES ROBERT WILSON, OF HOBART, TASMAN IA, AUSTRALIA.

. MODE OF AND APPARATUS FOR MOLDING. GUTTERS AND'CURBINGS.

Specification of Letters Patent.

Patented Mar. 21, 1922.

Application filed June 9, 1920. Serial No. 387,644.

To all to hom it may concern Be itlmown that I, Bonner WVnJsoN, a subject of the King of Great Britain, residlng at National Mutual Buildings, Macquarie Street, Hobart, in the State of Tasmania, Commonwealth of Australia, have invented a certain new and useful Improved Mode of and Apparatus for Molding Gutters and Ourbings, of which the following is a specification.

This invention relates to improved means for molding street curbs and gutters, in situ, or otherwise, in one piece by utilizing a specially constructed mold. A further object of the invention is to provide for the formation of either straight or curved gutters and curbs and for lifting the mold frames from the formation when set. The invention also provides strickle devices for finishing the curb and gutter respectively.

Preferably, the invention is used to make the curbs and gutters, monolithic, in situ, but same can be formed in suitable lengths in the yard and assembled on the job.

In the accompanying drawing Figure 1 is a perspective view of a mold constructed in accordance with this invention.

Figure 2 is a section of a curved mold for forming corners, being shown, it being understood that the other parts are made to conform in accordance with the invention.

Figure 3 shows in perspective view a strickle for finishing the curb and for shapin the chamfer on edge of same.

igure 4: is a sectional elevation of the gutter strickle used for finishing the gutter surface.

Figure 5 contains views of the handle and connections for operating the gutter strickle.

Figure 6 is a side elevation of a lifting device which is attached to the irons on the mold, and

Figure 7 is a plan view of same.

The mold is composed of end plates 8 that are shaped to the desired curb and gutter contours and are joined by sets of parallel. angle irons 9 in about eight feet lengths. The plates are provided with bolt and pin holes 10 for the purpose of connecting up two or more lengths of mold.

The irons are disposed with one web directed outwards to present a fiat inner surface to the mold plates 11 two of which form the curb and one confines the gutter only the curb angle iron at its junction with the road. The inner curb mold plate is not continued downwards so far as its fellow toensure that the material placed in the curb shall set integral with that in the gutter.

The upper edge of each end plate 8 is nicked at 12 to provide a recess to assist 1n making the chamfer on the outer edge of the curb with the special strickle tool of Figure 3. This tool is composed of a plate 13 and handle la and at one end with the plate 15, the object of which is to collect the material taken off the rough surface and.

to direct it into the gutter where it will be camped in and the surface afterwards finished with the strickletool of Figure 1. On the lower surface of 13 is the bevel plate 16. which. forms the chamfer on the curb edge and fits the nick12 before mentioned.

It will be observed that the outer curb mold plate 11, though short, is supported on two longitudinally placed angle irons 17. The lower iron of the two is in about the same plane as the outward gutter iron 9 for the purpose to be explained. When the gutter has been filled with material the strickle plate 18 is drawn over it by means of the handle 19 held between the lug 20 by a pin 21 on a plate attached to 18.

Each extremity of the strickle plate is fitted with an angle iron 22 having an outwardly projecting web that will rest on the said lower iron 17 and the outer iron 9 and slide thereon when the strickle 18 is worked over the gutter, thus guiding and supporting the same.

When the material has set and the formation is finished the molds can be lifted, section bysection, with the handle or grip 23. This is composed of two plates articulated at 24c and provided at each end with a stout turned outer finger 25. This lifting member is preferably made slightly longer than the mold is wide so that the fingers 25 can be brought under the outwardly projecting irons 9 of the frame and engage the same. The downwardly projecting web of the iron 9 is provided with a slot 26. The ends of the lifter are inserted in the slots and then slid along the web clear of the slots.

The handle will be lifted at the joint 24: causing the member 23 to grip and lift the mold clear of the job. So that the inner iron 22 shall be free to slide on the iron 17 and from one mold section to the next, the end plates 8 are further nicked at 26 immediatelyabove the lower iron 17 and further nicked inwardly as at 26'. below the said iron to allow for the end of the strickle working right up to theinner edge of the gutter which may be curved or be an inclined plane surface, as described.

The sections of mold bolted together will leave about one half inch space between the formations when set. This space is filled by hand and trowelled oil to present asolid continuous surface. v

In operation, the molds are placed in position at each side of the roadway and the material is filled in between the curb plates 11 and into the space provided for the gutter. The filling will join below the outer edge of the gutter to form a solid and integral mass the surfaces of which can be finished with the tools provided. When sufiiciently set the mold is lifted clear of the formation and the interstices between the sections are filled by hand to make a continuous integral curb and gutter;

Having now described my invention what I claim as new anddesire to secure by Letters Patent is 2-- 1. In apparatus of the kind indicated,

transverse plates shaped to theleontours of between the irons, a' nick or opening in the top edge of each transverse plate, and a strickle tool having a depending bevel plate adapted to fit said opening for forming the chamfered edge to the curb.

2. In apparatus of the kind indicated, transverse end plates shaped to the contours of a curb and gutter, longitudinal angle irons supporting said plates, mold plates on the irons, a thirdangle iron below the outer curb iron, a nick in the end plates immediately above and below said third iron and a nick in eachend plate at the top behind said curb iron, for the purposes specified.

3. In apparatus of the kind indicated, means for lifting the mold clear of the set material which consists of a pair of articulating bars, a' turned in finger on each end of a bar adapted to engage the angle iron web and means at the joint between the bars for lifting same with the mold.

In testimony whereof I aflix my signature.

ROBERT WILSON. 

